Which shameless dvd to start?
That's a tough question that would differ with everyone I suppose.
I have love for all different genres, I love Italian horror films but probably enjoy crime, giallo and westerns the most.
Personally my favourite Shameless release is What have they done to your daughters which for me is the perfect mixture of crime & giallo together. So that's the one I'd recommed the most.
Someone else may be a gorehound and suggest one of the gorier entries or someone else may enjoy a bit of wrongness and sleaze more.
So it's probably best to let us know what sort of stuff you enjoy the most and let the recommendations come in.